Pedagogical content knowledge (PCK) has been widely recognised as an important aspect of the expertise for teaching. However, the extent to which teachers' own teaching practice can be a learning resource for them to develop PCK has not been systematically explored. This empirical study aimed to explore the unique contribution of the work of…

The purpose of this study was to examine distinct latent classes of middle grades mathematics teachers with respect to reasoning about fractions. Survey response data came from a nationwide sample of 990 in-service middle grades mathematics teachers. The survey focused on four components of reasoning about fractions in terms of quantities:…

Ask a parent, politician, or school board member to describe the ideal qualifications of a math teacher, and most would probably rank having a college major in that subject high on the list. Yet when it comes to improving student learning in elementary and middle school, research shows that the value of that academic credential is limited--at…